The Absolute Sound Podcast

Innovators Series: Theoretica Applied Physics

Today I’m taking an inside look at possibly the most innovative company in the consumer audio space. I say this because today’s subject, Theoretica Applied Physics, is working on some of the biggest problems of audio believability, their results are quite successful in my experience, and the architecture they use is relatively low cost. Let’s take a deeper look. Learn more: https://www.theoretica.us/This video is sponsored by: https://www.theabsolutesound.com/newsletter00:00 Theoretica Applied Physics 00:56 Believability03:38 Advanced Technologies06:27 Problem 1 Part A11:59 Problem 2 15:56 Problem 1 Part B19:15 Problem 322:15 Problem 424:42 SummaryNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Sennheiser HDB 630 Wireless Headphones Review

Flexibility is not something one usually associates with wired headphones. After all, you're tethered to your equipment. You can't go out, hop up and get a cup of coffee, and you can't do a lot of adjustment to the sound profile as well. Wireless headphones promise to do a lot more. Aside from the flexibility of being able to get up and move around, that will without a cable tied to your head. But also the idea is you could adjust the sound to your own personal specifications, as it were, because wireless headphones have digital signal processing on board. So if you need to, you could tweak the sound. The trouble is, in cutting the cable. Obviously a lot of the sound quality got cut as well. Sennheiser now has tried to solve that problem with the HD630s. This video is sponsored by: https://www.hifiman.com/products/detail/35000:00 Sennheiser HDB 63001:39 Overview06:31 Sound Quality12:17 Compare & Contrast13:45 SummaryNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Isoacoustics GAIA Neo speaker feet

In this briefing, I give my basic observations about the performance of the Isoacoustics GAIA Neo speaker footers. These are complex passive absorbers that replace the spikes normally used at the base of speakers like my test subject, the Perlisten S7t. Normally, I think of products like this as “below threshold” items – products that may be beneficial, but whose effect may be difficult to hear in isolation, especially because a quick A/B comparison is hard and the effect is subtle. But I heard a demo arranged by IsoAcoustics that suggested otherwise, and when they offered to supply a set for testing, I accepted because in my listening room I have much longer to understand what products do. Let’s see what I found.In memorium: Dan Roemer: September 4, 1970 - December 26, 2026Dan was the genius behind the S7t speaker mentioned in this video. He was a great designer and a special person. He will be missed. This video is sponsored by: https://www.sotm-audio.com/Tom's Listening Room: https://youtu.be/To3yKpFUMNINewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Onkyo Atmos Receiver Giveaway Details

Erratum: Giveaway occurs on January 30, 2026When we reviewed the new Onkyo M-80 power amp and P-80 streaming preamp, Onkyo kindly sent us a TX-RZ30 receiver to offer to our viewers as a giveaway. We didn’t want to interrupt the review video excessively, yet we thought there might be viewers interested in the giveaway who hadn’t seen the review. So, we made this brief Giveaway announcement.January 30, 2026 Viewer Giveaway of an Onkyo 9.2 channel Atmos receiver; details after the break and here: https://www.theabsolutesound.com/give...QR Code Link for $1 subscription offer: https://theabsolutesound.secure.darwin.cx/J25YTS5AOnkyo P-80 preamp and M-80 amp Review: https://youtu.be/NMcIE3K2bD8?si=pLFAz30kRb6KH9ETNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Monitor Audio Studio 89 Bookshelf Speakers Review

There's a lot of nostalgia out there for the 1980s, and when British speaker maker Monitor Audio looked back at that decade, it discovered gold in the form of its studio 15 speaker. And so, inspired by the creativity and individuality of the 1980s, monitors set out to create the studio 89. So are these $2,750 per pair speakers totally awesome or just bogus? Let's find out!This video is sponsored by: https://store.hifiman.com/index.php/he1000-unveiled.html?gad_source=1&gad_campaignid=20953209524&gbraid=0AAAAACkVu54tFgOM8QBnVRrsJIzTJpilW&gclid=Cj0KCQiAsNPKBhCqARIsACm01fSUNf7KaVH-yUHcTuJoHzJc0e1fp-wEC6HMoJiL9syFDWCu1AzKJCMaAoepEALw_wcB00:00 Monitor Audio Studio 8901:09 Overview03:48 Set Up 05:47 Sound Quality09:44 TradeoffsNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Orchard Audio Pecan Pi+ Premium Streaming DAC Review

Orchard Audio is a US manufacturer of amplifiers, headphone amplifiers and now streamer/DACs in the case of the product we’re reviewing here, the Pecan Pi+ Premium. The company believes strongly in engineering and is particularly sensitive to leveraging appropriate parts. We’ve reviewed their Starkrimson GANFET amplifer previously. With the Pecan Pi, we were particularly attracted by the incorporation of top, and relatively rare, AKM Velvet Sound filter/modulator and DAC chips. But there is more to the design. Let’s take a look. This video is sponsored by: https://fidelityimports.com/pages/opera-loudspeakersStarkrimson Power Amplifier Review: https://youtu.be/WjkFLlQmB_k?si=lai-6vjAVT0r29du00:00 Orchard Audio Pecan Pi+01:34 Key Features07:48 Sound Quality10:44 Value?

Review/Giveaway: Onkyo Icon M-80 amplifier and P-80 streaming preamp review

Details of the Viewer Giveaway of an Onkyo 9.2 channel Atmos receiver are after the break.Every once in a while, reviewers get products to evaluate that just doesn’t conform to the standard or to their expectations. That has certainly been the case with the new Onkyo M-80 amp and P-80 preamp. Let’s take a look, because the way this pairing deviates from normal might be very interesting to you. This video is sponsored by: theabsolutesound.com/newsletter00:00 M-80 amplifier and P-80 streaming preamp 01:05 Giveaway02:09 Features & Design06:55 Sound Quality14:20 Summary14:58 Comparative CodaNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comTom's reference system:Aurender N20 Streamer/ServerRoon Nucleus serverMac Mini (M2) serverWiim Pro server/DACBluesound Node server/DACTopping D70 Pro DACdCS Lina DAC/Master clockBerkeley Alpha DAC Reference Series 3P with Alpha USB Reference input moduleMSB Premier DACJ Sikora Initial Max turntableTechnics SL-1210G turntableKuzma 4Point 9” armJ Sikora KV12 tone armDS Audio 003 cartridgeBenz Gullwing SLR cartridgeHana Umami Blue cartridgeHegel V10 phono preampMusical Surroundings Phonomena III phono preampDS Audio 003 optical cartridge energizerSoulution 326 preampWattson Madison power ampHegel H20 power ampMBL N51 integrated ampMagico A5 speakersPerlisten S7t speakersWireworld Platinum Electra Series 10 speaker and line cablesShunyata Omega digital cablesShunyata Venom power cables and directorAudioquest Niagara 3000 power conditioner (for analog)Audioquest Niagra 7000 power conditioningAavik Ethernet SwitchRediacoustic diffusers and absorbersRediacoustic bass trapsPSI Audio AVAA active trapsSalamander racksSolidsteel Turntable rackWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

JCAT XACT S1 Evo Server Review

That said, for those of you who have a budget that could accommodate the JCAT XACT S1 Evo Server at $18,600 US or for those of you who are genuinely curious about the state-of-the-art in audio streaming, you’re gonna wanna stick around while I share what I heard when listening to this refined bit of kit. This video is sponsored by: https://www.devialet.com/en-us/amplifiers/?srsltid=AfmBOopMaf_et8mOEEL6rCtYelUeonyPqFg9RVuBdr2cWi96HSBd3fMv00:00 JCAT XACT S1 Evo01:18 Overview04:09 Specs & Design07:39 Sound Quality12:15 ConclusionNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Building/Tuning Listening Rooms: Audio Set-Up Series - Tour and Learn

Last year I built a new listening room. From the ground up. In part, this is the story of that process, but much more I have tried here to organize what I learned so that it is also instructive for music lovers and audiophiles who want to get more out of their current rooms. So, you don’t have to build a new room or complete a new building like I did to get a lot of value from this. I hope. This is a long one. Acoustics is a complex subject. Per our usual practice, I’ve tried to simplify but not dumb down. Anyway, if you hate complexity, hit the eject button now. This video is sponsored by: http://theabsolutesound.com/newsletterRobert Harley's Room Tour: https://youtu.be/OtUcfiaN6CY?si=GW7B9L13ZMlHpw0PREDI Acoustics: https://rediacoustics.com/Fundamentals of Residential Wiring: https://www.theabsolutesound.com/articles/fundamentals-of-residential-ac-wiring-to-improve-high-end-audio-system-performance/00:00 Tom Martin’s Listening Room01:28 Overview03:37 Goals: What Are We Doing?06:18 Building Steps37:10 Sound Quality39:41 DIY Budget Approach43:17 More Approaches for a Tighter BudgetNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comTom's reference system:Aurender N20 Streamer/ServerRoon Nucleus serverMac Mini (M2) serverWiim Pro server/DACBluesound Node server/DACTopping D70 Pro DACdCS Lina DAC/Master clockBerkeley Alpha DAC Reference Series 3P with Alpha USB Reference input moduleMSB Premier DACJ Sikora Initial Max turntableTechnics SL-1210G turntableKuzma 4Point 9” armJ Sikora KV12 tone armDS Audio 003 cartridgeBenz Gullwing SLR cartridgeHana Umami Blue cartridgeHegel V10 phono preampMusical Surroundings Phonomena III phono preampDS Audio 003 optical cartridge energizerBlock Line and Power Block SE preampBlock Mono power ampsHegel H20 power ampsMBL N51 integrated ampMagico A5 speakersPerlisten S7t speakersWireworld Platinum Electra Series 10 speaker and line cablesShunyata Omega digital cablesShunyata Venom power cables and directorAudioquest Niagara 3000 power conditioner (for analog)Audioquest Niagra 7000 power conditioningAavik Ethernet SwitchRediacoustic diffusers and absorbersRediacoustic bass trapsPSI Audio AVAA active trapsSalamander racksSolidsteel Turntable rackWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound

Devialet Dione Dolby Atmos Soundbar Review

If there's one job for soundbars, it's to deliver deep bass. That's the Achille's Heel of every single big screen TV. In that sense the Devialet Dione does its job admirably, but it does much more than that, delivering a musicality that most other manufacturers surely are envious of... tune in to learn more!00:00 Devialet Dione00:57 Overview02:11 Specs & Design04:58 Sound Quality10:59 Dolby Atmos13:21 SummaryThis video is sponsored by: https://www.theabsolutesound.com/newsletterNewsletter: https://www.theabsolutesound.com/newsletterFacebook: https://www.facebook.com/theabsolutesoundSubstack: https://www.theabsolutesound.substack.comWhat Is The Absolute Sound?The Absolute Sound magazine has been a leading publication in high-end audio since 1972. Since the early 2000s, The Absolute Sound has expanded to include web, newsletter, digital magazine, social media, YouTube and Substack platforms. The Absolute Sound platforms have a global audience of over 500,000 audiophiles.#hifi #audiophile #theabsolutesound